457220863 has 4 divisors (see below), whose sum is σ = 498786408. Its totient is φ = 415655320.

The previous prime is 457220861. The next prime is 457220867. The reversal of 457220863 is 368022754.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 457220863 - 2¹ = 457220861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457220861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20782756 + ... + 20782777.

It is an arithmetic number, because the mean of its divisors is an integer number (124696602).

Almost surely, 2^457220863 is an apocalyptic number.

457220863 is a deficient number, since it is larger than the sum of its proper divisors (41565545).

457220863 is a wasteful number, since it uses less digits than its factorization.

457220863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41565544.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 457220863 is about 21382.7234701289. The cubic root of 457220863 is about 770.3865282615.

The spelling of 457220863 in words is "four hundred fifty-seven million, two hundred twenty thousand, eight hundred sixty-three".